1055cm plus locks up when printing... Display

remove the net card completely and the cycle the power once it has come to ready print an internal print to ensure the fault lies external to the plotter , if it is able to print then the fault lies between the sender unit(PC) and the net card if you still have an error at this point the the Main PCA is at fault,

Check helth condition of print heads, per form align print heads if nozzles are clogged replace print heads & cleaners..

It appears that HP has linked the wrong file to the driver download on the website. I would contact HP and get the correct link so that you can download the driver.

Hello pls install the proper driver with proper os your ptoblem will be resolved 100%

The picture gets rendered in the DesignJet, you need to add memory in the DJ.

This is an IO error. Remove the back cover and disconnect the cables to the HDD and remove the JetDierct card. Print the internal test page. If it prints OK, install the Jet Direct card. Print again. Prints OK? Replace the HDD (or run without it). Does not print OK?
Replace the JetDirect card. Parts available at: http://www.lpscomputer.com/c-654-designjet-1050c-1055cm.aspx

more than likely the slot in your carriage assembly is faulty. try cleaning the contacts on the carriage assembly if that doesn't help, than more than likely you need to replace the carriage assembly and also the trailing cables. if you are going to keep this printer for awhile than you should also replace the carriage belt. if you can find a certified hp repair person, the cost should be around $500-600.

Try putting a piece of paper in tray 1

uninstall the Hp printer driver and software.
install the printer software from the CD. download the driver from HP (driver only).

Here is the drivers page if you need a new set:
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=33712&locale=en_US&taskId=135&prodTypeId=18972&prodSeriesId=24023